Employee Retirement Plans	12 Months Ended
Employee Retirement Plans	Jan. 25, 2015
Employee Retirement Plans [Abstract]
Pension and Other Postretirement Benefits Disclosure	Employee Retirement Plans We have a 401(k) Retirement Plan covering substantially all of our United States employees. Under the plan, participating employees may defer up to 100% of their pre-tax earnings, subject to the Internal Revenue Service annual contribution limits. Effective January 2013, we began matching a portion of the employee contributions. Our contribution expense in fiscal years 2015 and 2014 was $5.8 million and $5.1 million, respectively. We also have defined contribution retirement plans outside of the United States to which we contributed $19.7 million, $16.2 million and $16.7 million for fiscal years 2015, 2014 and 2013, respectively.

The entire disclosure for pension and other postretirement benefits.